Joseph arthur wade



(No Model.)

J. A WADE. COMBINED AIR HEATER AND SURFACE CONDENSER. No. 577,894. Patented Mar. 2, 1897.

4v 7 z p 7- Q9 0000 1 5 o q Q nl n d 1/ n c Q n Q Q QL 2 .2 gg ugugll li v Q a I O 9 mqqqlg} I I @Ql UNiTnn STATns JOSEPH ARTHUR WADE, OF LIVERPOOL, ENGLAND, ASSIG-NOR TO JAMES ARTHUR PALETHORPE, OF SAME PLACE.

COMBINED AIR-HEATER AND SURFACE CONDENSER.

SPECIFICATION forming part of Letters Patent No. 577,894, dated March 2, 1897.

Application filed May 3, 1895. Serial No. 548,045. (No model.)

T0 at whom it may concern:

Be it known that I, JOSEPH ARTHUR WADE, a subject of the Queen of Great Britain, and a resident of Liverpool, England, have invented a new and useful Combined Air-Heater and Surface Condenser, of which the following is a specification.

My invention relates to a device whereby air may be heated for use in tobacco-treating processes or analogous arts by passing it through pipes which are subjected to contact with exhaust-steam from the engine which is employed in the plant, accomplishing at the same time the reduction of the steam to water suitable to be again passed into the boiler.

My invention consists in certain features of novelty particularly pointed out in the claim, and which will be fully understood on reference to the accompanying drawings, in which Figure 1 represents a vertical longitudinal section through a condenser employed for putting my invention into practice on the line 1 1, Fig. 2. Fig. 2 is an end view of the same with the head partly broken away to disclose a feature of one of the upwardly-projecting deflectors.

The condenser comprises a suitable drum, of rectangular or parallelepipedon shape, having the top 1, sides 2, bottom 3, and heads 4. In the heads 4 are supported a series of parallel air-tubes 5, which are upset at 6 to secure them in heads, and these air-tubes 5 are distributed in the drum in such a wayas to fill the interior space with the exception of narrow passages between them. Located in the top 1 and bottom 3 of the drum are steam-ports 7 and 8. These ports are located at opposite ends of the drum and likewise at opposite sides thereof, so that a line between them practically forms a diagonal of the drum, and steam which passes in at one and out at the other must therefore travel the greatest possible distance and be subjected in conse quence to the greatest possible condensation effect in a drum of given dimensions. In order to increase the distance which the steam must traverse in its transit through the drum, I provide vertical deflectors 9, which are secured alternately to the top and bottom by angle-irons 10 or in some equivalent manner and project toward the opposite wall of the drum as far as possible without materially impairing the capacity of the drum as a condenser.

The deflectors are essentially made vertical to accomplish their full purpose, for in addition to making the route of the steam more circuitous they have the important :function of separating the Water of condensation from the aqueous vapor and permitting the former to run off directly to the outlet. To accomplish this, each downwardly-projecting deflector causes all the contents to settle to the bottom, after which the succeeding upwardly-projecting deflector again diverts the course. Obviously all that portion which has become liquefied is now too heavy to rise again and is trapped, while the remaining vapor can pass to the next upwardly-projecting portion, where the liquid is again separated out and trapped. By this meansthe complete condensation is readily accomplished before any vapor can reach the outlet, and, as I have found in practice, the discharge from the lower opening is all in the form of water.

To permit the Water of condensation to escape from each trap, the upward ly-proj ectin g deflectors have small perforations 11 at their lower corners, which, while not permitting the escape of any appreciable amount of steam, will allow free exit for any water which may collect there. To facilitate the escape of this water, these corner openings are all made along the same side of the drum and the latter is tilted toward that side slightly and also toward the end where the outlet is located. In other words, the corner of the drum at which the water escapes is depressed slightly with relation to the rest of the drum. This may also be done by making the bottom of the drum symmetrical and tilting it slightly as a whole, which method of accomplishing the desired drainage of the bottom of the drum is preferable for the reason that it permit the manufacture of the drum alike at both top and bottom, when it becomes reversible. This may be desirable, as by selecting the Wall which is to be used for the top the corners at which the inlet and outlet occur may be determined at will.

The tubes 5 are connected at one end to a suitable air-supply and at their other ends to the passage leading to the drying-rooms or other place Where the Warm air is to be employed and air is either drawn or forced through the tubes, while the exhaust-steam from an engine or other convenient source is discharged into the drum. The air is generally at the temperature of the other atmosphere. In practice I have found that six thousand cubic feet of air may be passed through the tubes per minute, while the eX- haust-steam from a ten-horsepower engine working under a boiler-pressure of eighty pounds is discharged into the drum and the temperature of the air will be raised 100 Fahrenheit over the temperature of the outer atmosphere, while the steam is entirely reduced to liquid state.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

A combined air-heater and surface condenser of parallelepipedon' shape comprising a body tilted toward one end and toward one side having pendent transversely-arranged top deflectors, the upwardly-exten ding transversely-arranged bottom deflectors each having a perforation at the lowest side of the body and alternating with the pendent defiectors, the steam-inlet port located in the top at the highest corner ofthe body, awateroutlet located at the bottom at the lowest diagonally opposite corner of the body, and the closely-arranged air-tubes extending through the body and through the deflectors and arranged parallel With the body; substantially as described.

JOSEPH ARTHUR WADE.

Witnesses:

W. J. SULIs, J. ARTHUR PALETHORPE. 

